On Wed, Aug 17, 2011 at 10:55 AM, Bharata B Rao <bharata....@gmail.com> wrote: > Hi, > > I see that x86 CPU topology inside VM is not showing up as specified. > With some debugging, I found out that the root cause for this: qemu is > not enumerating the apic ids correctly for vcpus. I made the below > hackish change to get it working. Has anybody else seen this problem > ? This patch is on qemu-kvm-0.14.1. Using 2.6.39 for guest. > > *************************** > Fix apic id enumeration > > apic id returned to guest kernel in ebx for cpuid(function=1) depends on > CPUX86State->cpuid_apic_id which gets populated after the cpuid information > is cached in the host kernel. > > Fix this by setting cpuid_apic_id before cpuid information is passed to > the host kernel.
Going by the lack of response I assume not many people are using - smp option with sockets, cores and threads specified explicitly ? Or is it that I hit a corner case and not using the -smp option correctly enough ? Regards, Bharata.
